[io/Stats] introduce named constants for special workerIds

emper/Runtime.cpp

@@ -97,7 +97,7 @@ Runtime::Runtime(workerid_t workerCount, RuntimeStrategyFactory& strategyFactory
 		}
 
 		if constexpr (emper::STATS) {
-			globalIo->stats.workerId = -1;
+			globalIo->stats.workerId = emper::io::Stats::GLOBAL_COMPLETER_ID;
 			std::atexit(emper::io::Stats::printWorkerStats);
 		}
 	}

emper/io/Stats.cpp

@@ -41,7 +41,7 @@ auto operator<<(std::ostream& os, const Stats::CompletionType& t) -> std::ostrea
 }
 
 auto operator<<(std::ostream& os, const Stats& s) -> std::ostream& {
-	if (s.workerId == -1) {
+	if (s.workerId == Stats::GLOBAL_COMPLETER_ID) {
 		bool futuresToPrint = false;
 		std::stringstream ss;
 		ss << "# global IO Stats: #" << std::endl;
@@ -72,7 +72,7 @@ auto operator<<(std::ostream& os, const Stats& s) -> std::ostream& {
 		return os;
 	}
 
-	if (s.workerId == -2) {
+	if (s.workerId == Stats::AVG_ID) {
 		os << "# AVG IO worker Stats: #" << std::endl;
 	} else {
 		os << "# IO Stats of worker " << std::to_string(s.workerId) << ": #" << std::endl;
@@ -95,7 +95,7 @@ auto operator<<(std::ostream& os, const Stats& s) -> std::ostream& {
 		os << std::endl;
 	}
 
-	if (s.workerId == -1) {
+	if (s.workerId == Stats::GLOBAL_COMPLETER_ID) {
 		return os;
 	}
 
@@ -126,7 +126,7 @@ void Stats::printWorkerStats() {
 	// Use a stats object to calculate the averages
 	Stats avgs;
 	// mark as averages
-	avgs.workerId = -2;
+	avgs.workerId = Stats::AVG_ID;
 
 	// calculate avgs
 	int i = 1;

emper/io/Stats.hpp

@@ -46,6 +46,9 @@ class Stats {
 	friend class RecvFuture;
 	friend class WritevFuture;
 
+	static const int GLOBAL_COMPLETER_ID = -1;
+	static const int AVG_ID = -2;
+
 	int workerId = 0;
 	static_assert(sizeof(int) > sizeof(workerid_t));